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Since these separators are only 92% (sca' aight be as high as 94%)
efficient. auch dust still gets to the engineo.  co-pressor blades
snffer eroSion danage.    Cooling passages  in blades  in the hot
section plug dne to the     silicon in the  sand turning to glass
plugging these cooling p.s sages.   Larger particles dause actual
£Spact damage.  Ccopressor (and engine) perfonance deceases ~:rtil
a stall condition is reached.


Zn any aircraft that has air driven gyros, there are K2P'A filters
in the systea to filter out particles ~i i-ll as 0.3 nicrons
(cigarette Sno~e) to p:~~ct theae bearings.    Those filters aust
also be serviced to protect the instruz~ts.     -

~other obvious reminder~    vatch ~our density altitudes in these
ILigh temperatu:o, and at, tines high altitude enn'ironaents.

    i.  Li~ht Air~aft

        1.   lircraft   li)~ small' Cessna's, have ~~~  s~all  air
filters, in the fo= of small panel filters.    SOne of the filters
are mo~nted right ~der, and ~net behind the spinner, while ot1~ers
1i~. on ~~lti-tngine aircraft, are :~o~nted i~ an air duct leading
to the engine.  They have a relatively short service life, and must
be sonitored carefully.   Those filters too, an be cleaned up to 6
tiaes.

        2.   A potential problem exist~ in these filters, where if
they are front mounted, and the aircraft flies through a rain storm
and gets wet   (probably a remote problem in the ~(i~d1e last) the
restriction of the filter will increase dramatically!   The filter
can actually be suc~ed into the intake and carburetor.     This has
caused :~ore than one airplane to lose an engine and crash.  Also,
watch the gyro filters.

        ~sc.

        I.   ~ring co~voy operations, keep the vehicles far enough
apart to prtv~nt trailing vehicles from getting lost in the dust
clouds of leading vehicles.

        2.   Watch `rhere you park. Avoid tires  digging in" sandy
soils.  Deflate tires to get aore surface area thus more mobility
in soft sand.


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